According to the Global NCAP, an umbrella body of consumer car safety testing bodies, crash tests of Nissan's Datsun GO and Maruti-Suzuki's Swift demonstrated "a high risk of life-threatening injuries with both cars receiving zero-star safety rating for their adult occupant protection".
    
"These risks would be significantly reduced if the cars had to comply with the UN test regulation for frontal and side impact," Global NCAP said in a statement.
    
Reacting to the development, MSI said: "The cars manufactured and sold by Maruti Suzuki in India fully conform to all the regulations that are presently applicable in India."
    
On similar lines, cars manufactured by Maruti Suzuki in India for export to international markets fully conform to all the regulations of the respective importing country, it added.
    
Swift is one of the top-selling cars in India.
    
Nissan India Operations President Guillaume Sicard said: "Datsun GO meets the required local vehicle regulations in India...Safety is important and is a key issue in India. Automotive regulation standards in fast-growing countries are constantly evolving and as a global manufacturer, we are willing to adopt as well as help evolve standards in vehicular safety standards."
    
As per its test, Global NCAP said Maruti Suzuki Swift "scored zero stars for adult occupant protection and just one star for child occupant protection".
    
"The Swift's vehicle structure showed signs of collapsing in the crash and was rated as unstable. The car's lack of standard-fit airbags meant that the driver's head makes direct contact with the steering wheel – the dummy readings indicate a high probability of life threatening injuries," it said, adding the test was conducted at a speed of 64 km/h.
    
The Datsun GO also scored zero stars for adult occupant protection and just two stars for child occupant protection.
    
"The Datsun GO's vehicle structure collapsed in the crash and was rated as unstable. The car's lack of airbags meant that the driver's head makes direct contact with the steering wheel and dashboard – the dummy readings indicate a high probability of life-threatening injuries," it said.
    
The failure of the body shell makes it redundant to fit an airbag, it said.
    
However, unlike the GO, in Swift fitting with airbags would improve occupant protection, Global NCAP said.
    
Global NCAP chairman Max Mosley said: "India has the potential to be a world leader in the automobile industry but Indian consumers are not aware of how unsafe they would be in case of a crash."